Through Wall Radar ECE 480 Fall 2008 Design Day Presentation

Overview  Introduction and Project Goals  Background  Design Specifications  Final Product  Future Work  Demonstration

Introduction and Project Goals  Introduction What is Through Wall Radar?  A radar system designed to detect targets through large obstructions How is it useful?  Search and rescue applications

Introduction and Project Goals  Project Goals Design and build a core radar  Sensitive  Reconfigurable  Low Cost

Background  Linear FMCW Radar Transmit frequency sweep Target reflections cause time delay on return signal Delayed signals appear at radar output

Background  Self-Interference Cancellation Co-located antennas Transmitter energy interferes with receiver Use knowledge of transmitted signal to remove it from the receiver

Design Specifications  Basic Radar Performance Ability to detect multiple targets Easily identify and distinguish between targets

Design Specifications  Reconfigurable Easily add expanded capabilities High percentage of COTS modules  Low Cost

Final Product

 Software Signal Acquisition and Generation Background Subtraction MTI End user controls

Final Product  Hardware Modular components  RF Component Module  Signal Processing Unit  Power Supply Unit

Final Product  Hardware Reconfigurable components  Expansion Ports  Scalable Op-Amp Design

Final Product  Low cost We Spent Under $1000!

Looking Back at Project Goals  Sensitive  Reconfigurable  Low-Cost

Future Work  Basic Radar Enhancements Transmit Power Background Subtraction and MTI Improvements Video Filter SAR Image Courtesy of NASA

Future Work  Self-Interference Cancellation Vector Modulation

Demonstration